Steam superheater



p 7, 1943. F. EINWAECHTER, JR, ETAL 2,328,896

STEAM SUPERHEATER Filed Oct. 24, 1940 2 Sheets-Sheet 1 INVENTORS.

ATTORNEY Sept. 7, 1943. F. FEINWAECHTER, JR., ETAL 2,323,896

STEAM surfinnm'mw Filed Oct 24; 1940 2 Sheet-Sheet 2 g I u g8 0 Patehjted septi Q l 'IYhei shells; each is; interiorlymsu divided y a the shellsare trayfilsedwbylongitudinal srhplsegor refines. 1 In the ernploymentlpf therebi I are relatively memoirs te series or single cqntinuops circuit, c qnpectiorr coupled toloneshellan he utle 1st r i w m' M (In? pipe leading into. b ler and. throttle vul superheater ste, in passages communicatm c urse si theemiularpassage about'theshel Another objectbf the tinvent ion is ea m superheater imit of i sinipl nd Compact superheater shells, the steam; you; se orpassages erheater comppsed pf r-relong ecl ylmdr cal ll f pr extens iorl conqentrically :ip'to an enlarged therethreugh the het, ges unction w h construction for. insertion ihtpfire tube space f a ballet, the unitlincl'uding a plurelitybf per l? allel passages joined at one end ahdfidaptihgya j Y plurality of units to ,be conn-cted n unic'sn rorg fi steam s l perh ter 11 emotive: heil'ers; 1t and theserie i '"Anotherz.ojbjectdf the irlverltibii is to provid'ea l I 'steamsuperheater unit constituting anelongated cylindrical: shell .for i'insertion into ahfire" tlibe.

space :of.cabeilen arid :interiorlyw formed with e;

eneht'the" silperheaterjshell of the presenti spe i isecti "r h rein, is lco'nveritidr al y l plurality of 'ldngit'udinhl passages*juined miseries withtheiinlgtmind outlettherof located at ai cor-t A longitudinal plate toprdvideztifa'reverbatgjrycourse respondingle'ndfioj the shell for conneqtioniext'erior to} obtain; vincreasejin :length iandirestablish the inlet andtoutlet'connectionstherefd altxcme end or Ythe'sh'ell; adapting the,bonduitivconnections therewith towbelocated Withim the: smoke fliieifor niorficonveriient? r-aceessgflrzfaicilitatihg installaticr'i and removal in making repalrsly lfhel divisions bfofsithelboiler; and ada'pting a7 plurality :of units to i be directly ,conr iected and irlterchanged "for effe ctin g yaicontinuqus passagetherethrough, the V shell-'f longitudinally; traversedfibyiak plurality" of emanating from theYfire box of theboilerw-fy k 1 ljurther qbjects sand advantages-of the invem 11 be 12 MB :full ap t ji m a riw the aecumpgnying drawings; in which:, i-

walvertiealsectioh'through tllsvfflreg lecomot-ive and; penftrally through ig'ure 31 1s a central segitiqrr bf a, superheater onQof .locdmdt ive bqiler, illustratin giteit O1 'supem ate protecting Wall ml "of fuhe superheater shell to {prgl'ljQll the same ega ihst ldire ct .ekposm: from heatgridtfl mgs in thefire bbx yf amber 5,

eiidfofl thefstaljcli, which deperliids iritq the smpke The" intake of t eir pipe, "l ql n h n a 'ri el i e; is wit th e m course ier"the steam through he) r The j drawings disclose. the dilemma; is? the 'inlthe present instance the I one side Gilt it A fold for making a valve controlled supply conthat vahle' lz, which connects with the dry pipe as a Controlling outlet therefor, is located at the forward'end of the .dry pipe, exterior of the boiler and within the smoke box 6. I V g I t The dry pipe Ill at its, forward end extends through the front flue sheet 2 of the boiler; with which it is externally in sealed connectionj and projects into the smoke box andis coupled to th ody fth mettle-rah: L Ti a a e= odyat va ve is; am s e i tia a E eni:

meet the return orforward passage 25 of one unit 3 with the interior of the units above the diagonally with there'arward passage!!! of the second unit. 1 7 Each of the units at the 'forwardfree end and at the upper side ofthe shell is provided with a flanged ;conduit fitting 21 respectively connecting disposed dividing plates, connecting the rearward nection with a pair of conduits ors'teamlines l3,

l3, respectively leading to steam cylinders at rela-"" -tive opposite sides ofthe locomotivewithrthej i.

upper portion of the conduits B disposed thesmokebox.

At the opposite side of the valve, the va ve body provides a pair of branch or connectingl passages I p M, I vone forconnecting-the dry pipe-lptveitl' vthex Y intake of the superheatenanda second passage connecting. the outlet of "the superheater through the valve and manifold. for steam delivery-Ltd. the l 3,.- leading tojthe several engine conductors li The valve body, with. its. valve. and: several 3 branch ffpas'sages, forms a'ivery compact unit; s :fmaterially isirnplifying midi-facilitating. assembly .l 1 and installation; The throttle valve body or casor ...r

ing' projects through'an opening. in. the t'op wall of the smoke fbox and carries a valve operating 'shaftflfi}projecting laterally of the casing; A

v crank arm "I is figcedoni' the 'outer end offthe shaft l 6,- to which is attached an operating or pull-rodextending to thecab. g c The boiler within its water space-has a pair of large'diameter'; fire tubes I8; 18; adjoiningly arranged in parallelism attachedftoc the front and back flue: sheets 2, 3, extending longitudinally throughthe water' space, each providingfachamher for the receptionof a superheate run'it posi 'tioned-concentrically therein: Eaclfsuprheater unit consists of a cylindrical shell I I9 provided with heads 'orends'ZiigZl, secured thereto With- 7 t .1 1 is a ur ty o alc j im te z r e :2. trav rse the he s: a d. w d d. J @the u sa cu ed, he e Q-j h $1 ,1 spa ed from' the chamber wall, thereby providing an annular passage for the hot gases emanating from the firebox; and hot, gases from the fire bo xalso passing through the small tubes 22hr theu heir se-tome mo b x;

max be, rovided betwe n he-shell 8 d ihe af t an 11 mm??? sagging, ntaetbf th s,

. E,,%Qh,,sup r by. a d ame ic he l. r v din lter te d c i ncdi pasii e as at rearward passage 24. and aforward. passage I 25, i communication at the reat eh qf the'she'll.

The dividing plate 2 331185 at ana glflapproifif m e y rty-"fi ede r esi to'the horizon al, an

inclines upwardly toward'the center of. theboil' The uperhe ter' units h ro ward;- e rtepd beyond the front flue sheet'pf the jacentinner sides 0t the projectingiends of v c, thelfinits, a d relatively in union connection and 1 combined to; form across passage connecting the p .in riorof the eater, uh'i t interiorlv is su citi ga, v r t nl aie-zs, termina ing a suitable distance from therea'r end of ,the.;heater' therear end to, a sm k fiPQQ? he. wrea hs w t he 1w? e e sael amhsr the shel hi h 1 v nally hayinga reverting directioned passage 24 of one unit with the drs piper. l q thrqugh the branchipassa ge, L4 in the a vlf p ylt, nd vsi lwa d pas a e 25 of the second unit with the steam delivery conduits l3 The-conduit fittings 26 ,211, or each unit are of duplicate construction and relatively disposed at. right'angles, renderingthe units interchangeable within the; heater chamber; of. the boiler, and

when'disposed'ina vertical position provide, an inlet and outlet for the unitsjand in a horizontal positionta. cross interconnecting passage for. the

units; all" locatedsat one. and :the same endlof the c heater shells, opermittingrall 'ofztheconduittcen i nections to be" made within the smoke boxexte:

riorlycof the boilershell."

[It's de irable to protect the rear end vof the v '1 units Within the heat:chamber of-the boiler from closedas composed of firev brick12 8 disposed ina tierv withinthe rear end oi the-shell l8 from the heater chamber withinlthe boile iwith thefbri'ck} of each layer spaced apart 'to provideducts or c 5 openings through the wall and locatedstagerd fromi the' ductsin-the next adjoiningflaydrioif brick, theopenings having a greater area'f'than apertures "ZB- therethrOughand interioily carries at; 3i); arrangedaifopposite sides of th" theatres Y plu lity to "form a water space l traversed by oftub'esl32 secured to the discs In Figure shell l8'has a closed inner or rear end which lies is spac drro ift crir fiusheet'of the hon traversed'bya pmrahty'cr tube sections 33 ls ecur tbflthe' boilehwali'aha the shelll8; I

-.Havingdescribedour;invention ,"we claim: l -11 In a, boiler of the-locomotive type, a; plurality otsteamsuperheater units, eachcomposed oft-341.

,elongatedi cylindrical shell forfin 'sertion into; a I tube, extending. through. the WHJEEQSPQCQ of the boiler for emitting gases fromthlerfire chamber at war end o the. she-1.1

passage withinletand outlet'connehtion'sth reipi' at the 6m end'ai the-shell formakinigconduit eohnections 'withi fi the smoke chamber, the onn'ectiorfs'for acfi shell having their axsat-right angles aha thefii outer ends :spac ed equidistant fronithYaSiis "of a respective shell for"interch'ange'ab-ly positioning the shells, adaptingrthesameto' be horizontally n interconnected, i unitsbelow the diagonally qispqsgd and to provlde for an inlet and i relishes- 'e fi t n s pi' ha' ea outlet eonnection perpendicular? to theinterco'rie tiqpnq th ishells.;-- 1

chamber at the forward '2. In a boiler of the locomotive type, a plurality of steam superheater units, each composed of an boiler for emitting gases from the, fire chamber at Wone rear end to a smoke chamberat anopposite end of the boiler, the shell circumferentially spaced from said gasemitting tube'and having a elongated cylindrical shell for insertion into a tubeextending through, the water space oflt he,

, tively at right angles and their outer'ends spaced equidistant fromthe axis of a respective shell for interchangeably positioning thev shells, and adapting the sameto be horizontally interconnected, and providing for a second connection perpendicular thereto, and a header for said units proplurality of gas emitting tubes longitudinally traversing the same, the shell internally having a reverting passage with inletandputlet connec tions at a corresponding end of the shell, the,

reverting passages of the units in; conduit connecviding independentbranch passages, onefor connecting the inlet to the superheater unit with a dry. pipe leading into the steam space ofthe boiler, and a second branchpassage for connecting the outlet of the superheat'er unit with a Valve it 1 chamberinfthe header and including a throttle valvefor thesteamdelivery control. I

- ,REDERICK H. .EINWAECH'I'ER, JR. 

